From 9b3c7c3c713d7018c79f0b0ca0b34d386e8a25dd Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 17 Sep 1998 19:51:33 +0000 Subject: Update. 1998-09-17 19:34 Ulrich Drepper * sysdeps/unix/sysv/sysv4/bits/utsname.h: Fix typo. Patch by John Tobey . 1998-09-17 Mark Kettenis * login/pty-internal.h: Removed. Moved constants related to the `grantpt' helper program protocol to ... * login/pty-private.h: ... here. New file. * sysdeps/unix/sysv/linux/ptsname.c (ptsname): Reimplementation to make the function work with kernels >= 2.1.115. * sysdeps/unix/sysv/linux/getpt.c (getpt): Reimplement to call BSD version if using the cloning device fails. * sysdeps/unix/sysv/linux/grantpt.c: New file. * sysdeps/unix/sysv/linux/unlockpt.c: General cleanup. * sysdeps/unix/bsd/getpt.c (__getpt): Largely rewritten to allow use by Linux specific code. * sysdeps/unix/bsd/unlockpt.c: General cleanup. * sysdeps/unix/grantpt.c: Largely rewritten. (pts_name): New function. (grantpt): Use pts_name, check group and permission mode in addition to owner. Try to set the owner, group and permission mode first without invoking the helper program. * login/programs/pt_chown.c: Largely rewritten. Add argp and internationalization support. Use symbolic constants instead of hardwired numbers for permission mode. * sysdeps/unix/bsd/ptsname.c: New file. 1998-09-17 22:04 Tim Waugh * posix/wordexp-test.c: Undo last change. * posix/wordexp.c: Undo last change. --- sysdeps/unix/sysv/linux/grantpt.c | 64 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/grantpt.c (limited to 'sysdeps/unix/sysv/linux/grantpt.c') diff --git a/sysdeps/unix/sysv/linux/grantpt.c b/sysdeps/unix/sysv/linux/grantpt.c new file mode 100644 index 0000000000..668f13192e --- /dev/null +++ b/sysdeps/unix/sysv/linux/grantpt.c @@ -0,0 +1,64 @@ +/* Copyright (C) 1998 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include +#include +#include + +/* Constant that identifies the `devpts' filesystem. */ +#define DEVPTS_SUPER_MAGIC 0x1cd1 + +/* Prototype for function that changes ownership and access permission + for slave pseudo terminals that do not live on a `devpts' + filesystem. */ +int __unix_grantpt (int fd); + +/* Prototype for private function that gets the name of the slave + pseudo terminal in a safe way. */ +static int pts_name (int fd, char **pts, size_t buf_len); + +/* Change the ownership and access permission of the slave pseudo + terminal associated with the master pseudo terminal specified + by FD. */ +int +grantpt (int fd) +{ + struct statfs fsbuf; +#ifdef PATH_MAX + char _buf[PATH_MAX]; +#else + char _buf[512]; +#endif + char *buf = _buf; + + if (pts_name (fd, &buf, sizeof (_buf))) + return -1; + + if (__statfs (buf, &fsbuf) < 0) + return -1; + + /* If the slave pseudo terminal lives on a `devpts' filesystem, the + ownership and access permission are already set. */ + if (fsbuf.f_type == DEVPTS_SUPER_MAGIC) + return 0; + + return __unix_grantpt (fd); +} + +#define grantpt __unix_grantpt +#include -- cgit v1.2.3